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need help with Mk8 remote extruder steps & feedrate

Posted by mogey336

mogey336

need help with Mk8 remote extruder steps & feedrate
January 13, 2016 06:11PM

Registered: 8 years ago
Posts: 23

Hey guys
I'm building a 3D printer with ramps 1.4 and a4988
How can i calculte mk8 remote extruder steps and feedrate , I'm using j-head Nozzle Extruder
I'm using Marlin firmware
Mk8 extruder link

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o_lampe

Re: need help with Mk8 remote extruder steps & feedrate
January 15, 2016 04:23AM

Registered: 8 years ago
Posts: 5,232

triffid hunters calibration guide #e-steps.
Don't post the same question twice, please smiling smiley

-Olaf

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mogey336

Re: need help with Mk8 remote extruder steps & feedrate
January 15, 2016 07:00AM

Registered: 8 years ago
Posts: 23

e_steps_per_mm = (motor_steps_per_rev * driver_microstep) * (big_gear_teeth / small_gear_teeth) / (hob_effective_diameter * pi)
I don't understand which is big gear teeth or the small teeth and what is the hob effective diameter
For my mk8 remote extruder i have only one gear with 40 teeth and a bearing
Can you explain to me more

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o_lampe

Re: need help with Mk8 remote extruder steps & feedrate
January 16, 2016 03:59AM

Registered: 8 years ago
Posts: 5,232

Big and small gear refers to Gregs/Wade extruders. Set both numbers as 1, if you don't use a geared extruder.
If you have a gear on the stepper shaft which is flat then use it's outer diameter. When the gear is hobbed, measure the diameter of the hobbed part.
-Olaf

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mogey336

Re: need help with Mk8 remote extruder steps & feedrate
January 17, 2016 06:29PM